Fluid Trainer Question

I've been working out with my fluid trainer and the Spinervals tapes and I
want to know what is the correct amount of tension/pressure between the rear
wheel and the little roller wheel.  I want to make the fluid trainer to feel
as close to the road feel as possible.  Any suggestions on how tight to make
it or how many turns after the tire and wheel meet?  Open to any thoughts
you may have.  Thanks.